Abstract： Geotextiles have found wide applications in slope reinforcement engineering due to the advantages of reducing embankment
volume, shortening construction period, and economy and safety. The stability analysis methods for slopes with geotextile reinforcement
have attracted much attention. Among them, the upper bound method in limit analysis has been applied. In the existing methods, however,
the defined velocity field may not be in accordance with the deformation compatibility condition. In this study, three possible failure
patterns, namely active, Coulomb and passive slippage mode, were investigated based on different slip surfaces and the inclined slice
interfaces. It was found that with dense reinforcement spacing, the Coulomb mode employing a straight slip surface may always lead to
the smallest factor of safety. In practical applications, the simple and clearly-defined method can be solely used for the stability
analysis of geotextile reinforced slopes. To be convenient for engineering design and to rapidly achieve the factor of safety and
reinforcement spacing, the parameters of soil slopes were nondimensionalized. The stability charts were developed and compared with the
Michalowski design charts, and consequently the effectiveness of the present method was validated. Based on several practical projects
in China, the feasibility of the proposed upper bound method with Coulomb mode was verified.
